Pillows and blankets

This adds:

[X] Down Blankets (warmer than regular ones)
[X] Pillows and Down Pillows
[X] new item group: "bed" (also for future stuffed animals), spawns blankets and pillows (reduced spawn of blankets in general to compensate
[X]implement "bed" group in all the houses and stuff
[X] All items are craftable/uncraftable (down pillows/blankets needing/giving feathers)
[X] Sleeping in a large bed will give more sleepability than sleeping in a one-tile bed (This feature was coded by Shoes01)

Please tell me if some numbers or grammar are off, so I can fix it.

EDIT: [ ] Make pillows and down pillows make falling asleep easier I leave for another PR, I want to do more fun stuff. 
That means that I am done here. If someone can tell me where exactly I forgot a bracket or something, I can't seem to find the merge conflict.